C# (.NET) and Microservices: Architecture, Development, and Deployment

The book "C# (.NET) and Microservices" is a practical guide that will take you from a monolithic application to a full-fledged distributed system on the .NET platform. In the modern world of development, microservice architecture has become the standard for building scalable, fault-tolerant, and easily maintainable applications. This book will help you master all key aspects of working with microservices in C#.

What this book is about:

• Architecture design: You will learn how to properly decompose a monolithic application into microservices, define their boundaries, and choose interaction strategies (synchronous via HTTP/gRPC and asynchronous via message brokers).
• .NET technology stack: A detailed breakdown of ASP.NET Core for creating web services, Entity Framework Core for working with data in a distributed environment, as well as libraries for implementing Saga, Circuit Breaker, and CQRS patterns.
• Containerization and orchestration: Complete practical examples of packaging microservices into Docker containers and deploying them in Kubernetes. You will learn how to set up a CI/CD pipeline for automatic build and delivery.
• Integration and communication: Setting up API Gateway (Ocelot/YARP), working with RabbitMQ/Kafka for event-driven systems, as well as solving distributed transaction problems.
• Observability and monitoring: Implementing logging (Serilog), metrics (Prometheus), and distributed tracing (OpenTelemetry) for debugging and monitoring system health.

Who this book is for:

• C#/.NET developers who want to transition from monoliths to microservices or improve their skills in distributed systems.
• Software architects looking for practical recommendations on designing scalable solutions on the Microsoft platform.
• DevOps engineers working with .NET applications who want to gain a deeper understanding of the specifics of containerization and orchestration of services in C#.
• Team Leads and Senior developers responsible for technical strategy and architecture evolution.

What you will learn by reading the book:

• How to properly break down business logic into independent services and avoid common mistakes.
• How to implement inter-service communication with guaranteed message delivery.
• How to configure automatic scaling of services in Kubernetes under load.
• How to ensure security and authentication between microservices (JWT, OAuth2, OpenID Connect).
• How to test distributed systems: integration tests, contract tests (Pact), resilience testing.

The book contains many ready-made code examples, diagrams, and step-by-step instructions. All examples are written for the current version of .NET 8 and above. This is not just theory, but a full-fledged practical guide that you can immediately apply in your projects. Regardless of your current level, after reading you will be able to confidently design and develop microservice systems in C#.